How to convert atomic units of length to femtometers
1 a.u. of length is equal to 52,917.72109 femtometers, and 1 femtometer is equal to 0.00001889726125 atomic units of length. To convert, multiply by the conversion factor:
femtometers = atomic units of length × 52,917.72109
femtometers = atomic units of length ÷ 0.00001889726125Example: convert 15 a₀ to fm: 15 × 52,917.72109 = 793,765.8164 fm.
A.u. of Length to Femtometer conversion table
| A.u. of Length (a₀) | Femtometer (fm) |
|---|---|
| 0.01 a₀ | 529.1772109 fm |
| 0.1 a₀ | 5,291.772109 fm |
| 1 a₀ | 52,917.72109 fm |
| 2 a₀ | 105,835.4422 fm |
| 3 a₀ | 158,753.1633 fm |
| 5 a₀ | 264,588.6055 fm |
| 10 a₀ | 529,177.2109 fm |
| 20 a₀ | 1,058,354.422 fm |
| 50 a₀ | 2,645,886.055 fm |
| 100 a₀ | 5,291,772.109 fm |
| 250 a₀ | 13,229,430.27 fm |
| 500 a₀ | 26,458,860.55 fm |
| 1,000 a₀ | 52,917,721.09 fm |
About the a.u. of length
The atomic unit of length is the Bohr radius, about 5.29 × 10⁻¹¹ m: the most probable distance between the proton and electron in a hydrogen atom.
Symbol: a₀ · 1 a₀ = 5.291772109 × 10⁻¹¹ m · Category: Atomic & physics
About the femtometer
A femtometer is 10⁻¹⁵ meters, the scale of atomic nuclei. A proton has a radius of about 0.84 fm.
Symbol: fm · 1 fm = 1 × 10⁻¹⁵ m · Category: Metric (SI)